Hybrid Cloud and Migration on AWS
Learn to move workloads to AWS: choose a migration strategy, rehost with MGN, migrate databases with DMS, and connect on-premises networks.
What You'll Learn
Understanding Why Migrations Fail
A logistics company in Chennai plans a weekend cutover for 40 servers.
Choosing a Migration Strategy with the 7 Rs
Every application in an estate gets a decision, and the decision is rarely "move it unchanged." The 7 Rs name the options.
Discovering and Planning a Migration
You cannot plan what you cannot see. Discovery finds the servers and connections, and planning turns them into waves with a way back.
Rehosting Servers with AWS Application Migration Service
Rehosting is the fastest way to leave a data center: copy the server, not the application.
Migrating Databases with AWS DMS
Servers move by copying disks. Databases need a different approach, because they change constantly while you copy them.
Connecting On-Premises Networks
Migrations and hybrid workloads both depend on a private link between the data center and AWS.
Skills You'll Master
Curriculum Index9 topics
Understanding Why Migrations Fail
A logistics company in Chennai plans a weekend cutover for 40 servers.
Choosing a Migration Strategy with the 7 Rs
Every application in an estate gets a decision, and the decision is rarely "move it unchanged." The 7 Rs name the...
Discovering and Planning a Migration
You cannot plan what you cannot see. Discovery finds the servers and connections, and planning turns them into waves...
Rehosting Servers with AWS Application Migration Service
Rehosting is the fastest way to leave a data center: copy the server, not the application.
Migrating Databases with AWS DMS
Servers move by copying disks. Databases need a different approach, because they change constantly while you copy them.
Connecting On-Premises Networks
Migrations and hybrid workloads both depend on a private link between the data center and AWS.
Resolving DNS Across Hybrid Networks with Route 53 Resolver Endpoints
The network link works, the routes are right, and the application still cannot find the database.
Building the Hands-On Lab
You will build two VPCs joined by a Transit Gateway, one standing in for your data center.
Quick Reference and Common Mistakes
Common mistakes in migration and hybrid cloud Cutting over without a rollback plan.
Career Impact
Roles that use the skills in this module.
Cloud Engineer
DevOps Engineer
Solutions Architect
Next Modules
Related Guides
Practice on the Coding Sheet
Not a software engineer sheet. Every problem comes from real DevOps, SRE, Platform and Cloud interviews, from your first script to a system you build yourself.
Open the Coding SheetFrequently Asked Questions
They are seven options for what to do with each application: retire, retain, rehost, relocate, repurchase, replatform, and refactor. You pick one per application, not one for the whole company. Most estates use a mix, with rehost and replatform as the common defaults.
Application Migration Service (MGN) copies whole servers, including the operating system and disks, to EC2. Database Migration Service (DMS) copies the data inside a database, and can keep the target in sync while the source stays live. Many migrations use both: MGN for application servers and DMS for databases.
Use a VPN when you need connectivity quickly or have modest bandwidth needs. Use Direct Connect when you need steady high bandwidth and predictable latency, and plan for weeks of provisioning. Many teams use Direct Connect as the primary path and a VPN as the backup.
Not for a single VPC and one VPN. A Transit Gateway becomes worth it when you have several VPCs, or several VPN and Direct Connect connections, that all need to reach each other. It replaces a growing mesh of peering connections with one hub.